/**
 * Copyright (C) 2002-2015   The FreeCol Team
 * <p>
 * This file is part of FreeCol.
 * <p>
 * FreeCol is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 2 of the License, or
 * (at your option) any later version.
 * <p>
 * FreeCol is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * <p>
 * You should have received a copy of the GNU General Public License
 * along with FreeCol.  If not, see <http://www.gnu.org/licenses/>.
 */

package net.sf.freecol.common.logging;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.Date;
import java.util.logging.Formatter;
import java.util.logging.LogRecord;


/**
 * Formats a log record's data into human-readable text.
 */
final class TextFormatter extends Formatter
{

    /**
     * The constructor to use.
     */
    public TextFormatter( )
    {
    }

    /**
     * Formats the given log record's data into human-readable text.
     *
     * @param record The log record whose data needs to be formatted.
     * @return The log record's data as a string.
     */
    @Override
    public String format( LogRecord record )
    {
        StringBuilder result = new StringBuilder( );
        result.append( record.getSourceClassName( ) )
                .append( ' ' ).append( record.getSourceMethodName( ) )
                .append( "\n\t" ).append( record.getLevel( ).getName( ) )
                .append( ": " ).append( record.getMessage( ).replaceAll( "\n", "\n\t" ) )
                .append( "\n\t" ).append( new Date( record.getMillis( ) ) )
                .append( "\n\tThread: " ).append( record.getThreadID( ) )
                .append( '\n' );
        if ( record.getThrown( ) != null )
        {
            StringWriter sw = new StringWriter( );
            PrintWriter pw = new PrintWriter( sw );
            pw.println( "\tStack trace:" );
            record.getThrown( ).printStackTrace( pw );
            pw.println( "----------------------------" );
            pw.flush( );
            result.append( sw );
        }

        return result.toString( );
    }
}
